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An emu roaming in the Australian bush.
Blue tit on branch in English country garden in the Cotswolds, Oxfordshire
Lazienki Palace, Lazienki Park, Warsaw, Poland, Europe
Yellow-footed Snowy Egret, Egretta Thula, in glade in the Florida Everglades, United States of America
A heron fishing for food in the Helford Estuary, Cornwall, South West England
View of John Marshall Park on Pennsylvania Avenue, Washington D.C., United States of America, North America
Great Spotted Woodpecker on a birdfeeder pecking at peanuts, Cotswolds, England
White-fronted terns (Sterna Striata) in North Island, New Zealand
Immature Black Crake on water cabbage, Grumeti, Tanzania, East Africa
White-fronted terns (Sterna Striata) in North Island, New Zealand
White-fronted tern (Sterna Striata) in North Island, New Zealand
Kelp Goose, Sea Lion Island, Falkland Islands
Great White Egret in glade, Florida Everglades, United States of America
Greater Black-Backed Gull by San Francisco bay, California, United States of America
Greater Black-Backed Gull by San Francisco bay, California, United States of America
Grey Crowned Crane, Ngorongoro, Tanzania, East Africa
Mute swan on the River Windrush in Oxfordshire, England
Tawny Eagle, Grumeti, Tanzania
Usambiro Barbet, Grumet, Tanzania, East Africa
Kelp Goose, Sea Lion Island, Falkland Islands
Gray-backed Fiscal (shrike), Grumet, Tanzania, East Africa
White-fronted terns (Sterna Striata) in North Island, New Zealand
Blue tit on branch in English country garden in the Cotswolds, Oxfordshire
White-fronted terns (Sterna Striata) in North Island, New Zealand
White-fronted terns (Sterna Striata) in North Island, New Zealand
Common Babbler bird on fencepost at Chattra Sagar nature reserve at Nimaj, Rajasthan, Northern India
White-fronted tern (Sterna Striata) in North Island, New Zealand
Ibis Bird on Lake Sandoval, Peruvian Rainforest, South America
White-fronted terns (Sterna Striata) on a beach near South Head , North Island, New Zealand
Flock of vultures roosting in trees, Grumeti, Tanzania, East Africa
Long-tailed tit on branch in English country garden in the Cotswolds, Oxfordshire
Great Blue Heron on Santa Cruz, Galapagos Islands, Ecuador
Blue tit on branch in English country garden in the Cotswolds, Oxfordshire
White-fronted tern (Sterna Striata) in North Island, New Zealand
Cormorants perched on branches at Bharatphur Nature Reserve - a hunting reserve fo Bharatpur's Maharajas.
View of John Marshall Park on Pennsylvania Avenue, Washington D.C., United States of America, North America
Tawny Eagle, Grumeti, Tanzania
African Stonechat, Ngorongoro, Tanzania, East Africa
Black-browed Albatross (Thalassarche melanophrys) mating ritual in the Falkland Islands.
Grey-headed Albatross (Thalassarche chrysostoma) chick begging for food on nesting grounds in Elsehul Bay, South Georgia Island.
A mute swan at Lake Windermere in Ambleside, Lake District, Cumbria, England, United Kingdom, Europe
Jackdaws and rooks lined up on a electricity pylon, prior to roosting, Ulverston, Cumbria, United Kingdom, Europe
Avian pox outbreak at the king penguin (Aptenodytes patagonicus) breeding and nesting colony at Salisbury Plains, Bay of Isles on South Georgia Island, Southern Ocean.
A golden eagle
Gentoo penguin (Pygoscelis papua) parent feeding regurgitated krill to hungry chick in Antarctica.
Rooks and jackdaws at sunset, Cumbria, England, United Kingdom, Europe
Grey-headed Albatross (Thalassarche chrysostoma) chick on nesting grounds in Elsehul Bay, South Georgia Island.
King Penguin (Aptenodytes patagonicus) parent balancing egg on feet to keep it off the cold beach on South Georgia Island, southern Atlantic Ocean.
King penguin (Aptenodytes patagonicus) chick with parent on South Georgia Island, southern Atlantic Ocean.
King penguins (Aptenodytes patagonicus) in front of literally tens of thousands of nesting king penguins on South Georgia Island, southern Atlantic Ocean.
Adult Adelie Penguin (Pygoscelis adeliae) stealing rocks for a nest near the Antarctic Peninsula.
King Penguin (Aptenodytes patagonicus) feeding/guarding chick on South Georgia Island, southern Atlantic Ocean.
King Penguin (Aptenodytes patagonicus) chick protected by parent on South Georgia Island, southern Atlantic Ocean.
Adult Macaroni penguin (Eudyptes chrysolophus) in tussock grass on South Georgia Island, southern Atlantic Ocean.
An adult gentoo penguin (Pygoscelis papua) returning to the ocean to feed on a rocky beach in Antarctica.
King Penguin (Aptenodytes patagonicus) parent feeding/guarding chick on the beach on South Georgia Island, southern Atlantic Ocean.
Black and white swans in the Bussaco Forest reserve in Portugal, Europe
Adult Black-browed Albatross (Thalassarche melanophrys) on the wing in the Southern Atlantic Ocean.
Adult king penguin (Aptenodytes patagonicus) head detail on South Georgia Island, southern Atlantic Ocean.
King penguins (Aptenodytes patagonicus) literally by the tens of thousands on South Georgia Island, southern Atlantic Ocean.
Adult Black-browed Albatross (Thalassarche melanophrys) on the wing in the Southern Atlantic Ocean.
Ravens in the Lake District National Park, Cumbria, England, United Kingdom, Europe
Black-browed Albatross (Thalassarche melanophrys) chick on nest in the Falkland Islands.
Adult Black-browed Albatross (Thalassarche melanophrys) on the wing in theSouthern Atlantic Ocean.
(Restricted Resolution - please contact us)
King Penguins (Aptenodytes patagonicus) with chick "okum boy" on South Georgia Island, southern Atlantic Ocean.
King Penguins (Aptenodytes patagonicus) nesting by the thousands on South Georgia Island, southern Atlantic Ocean.
Avian influenza research
Cooper's Hawk, Accipiter cooperii
Ruby-throated Hummingbird, Archilochus colubris
Red-tailed Hawk
H5N1, Influenza A, Avian Flu Virus, TEM
Ruby-throated Hummingbird
H5N1, Influenza A, Avian Flu Virus, TEM
Red-shouldered Hawk, Buteo lineatus
Cedar Waxwing
H7N9, Influenza A, Avian Flu Virus, TEM
H1N1, Influenza A, Russian Flu, TEM
Northern Cardinal Male
Avian Influenza Virus
Avian Influenza Virus
Avian Influenza Virus
Avian Influenza Virus
High angle view of a Great blue heron looking over water (Ardea herodias)
Mountains near a lake, Mt Fuji, Yamanaka Lake, Yamanashi Prefecture, Chubu Region, Japan
Low angle view of a flock of snow goose flying in the sky, Bosque Del Apache National Wildlife Reserve, New Mexico, USA
Rear view of mother and her daughter sitting on a bench at a pier, Belize
Sunset over a sea, Gulf of Mexico, Venice Beach, Venice, Florida, USA
Low angle view of an ornate balcony, Jaisalmer, Rajasthan, India
Blue-And-Yellow macaw (Ara Ararauna) with a Hyacinth macaw (Anodorhynchus hyacinthus) perching on a branch, Florida Keys, Florida, USA
Oxpecker on the neck of a male Kudu (Tragelaphus strepsiceros), Kruger National Park, Mpumalanga Province, South Africa
Pigeons sitting on the ledge of a window, Jaisalmer, Rajasthan, India
Three flamingos standing in water, Cancun, Mexico
Facade of a cathedral, San Francisco Church And Convent, Lima, Peru
Two swans in a pond, Keukenhof Gardens, Lisse, Netherlands
A white egret is seen near a pond on the island of Jamaica
People sitting around a lifeguard stand on the beach
Pigeons flying in front of a building, St. Mark's Square, Venice, Italy
Side view of two hummingbirds near a red solution
Close-up of a fountain in a garden, Boston Public Garden, Boston, Massachusetts, USA
Low angle view of a Lilac-Breasted Roller (Coracias caudata) perching on a tree branch, Kalahari Desert, Botswana